Interrelation Profile Analysis Method for Alignment of Polarization-Maintaining Fiber

Zheng, Wenxin; Duke, Doug; Kubo, Takanori; Malinsky, Bryan

doi:10.1364/nfoec.2010.jtha61

Cited by 12 publications

(5 citation statements)

References 2 publications

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“…This method uses captured side-view images while continuously rotating through one revolution. The IPA profile was obtained by analyzing the brightness features that were obtained at each rotational angle [13]. Fig.…”

Section: Splicing 4cfsmentioning

confidence: 99%

Optical-Fiber Cable Employing 200-μm-Coated Four-Core Multicore Fibers

Sasaki

Fukumoto

Takenaga

et al. 2022

J. Lightwave Technol.

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Combining small-diameter optical-fiber technology and space-division multiplexing employing multicore fiber is a promising method of further increasing the transmission capacity of optical networks. Four-core multicore fibers with a 200-m coating diameter (200-4CFs), which was reduced from 250 m, were fabricated. The 200-4CFs had almost the same characteristics as the 4CFs with a 250-m cladding diameter. The 200-4CFs were ribbonized and cabled. This cabling is the first time a multicore fiber with a 200-m coating has been used. The attenuation increase due to the cabling was compared with that of the 250-m coating diameter. The effective bending radius of the 4CFs in a cable employing partially bonded ribbons was investigated and found to be smaller than the cable-drum radius. Mechanical and environmental tests based on IEC standards were performed on the cable employing 200-4CFs, and the cable exhibited excellent performance. The scalability of a high-fibercount cable employing 200-4CFs was demonstrated. Finally, the applicability of an automatic splice with core identification by side-view alignment to the 200-4CFs is presented.

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Section: Splicing 4cfsmentioning

confidence: 99%

Optical-Fiber Cable Employing 200-μm-Coated Four-Core Multicore Fibers

Sasaki

Fukumoto

Takenaga

et al. 2022

J. Lightwave Technol.

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“…A detailed comparison and discussion on the different PM fiber alignment methods can be found in [7]. Among those methods, the IPA method demonstrates best flexibility for geometry variation of existing PM fibers and quick adaptability to new PM fiber designs.…”

Section: Fig 1 Some Examples Of Typical Pm Fiber Typesmentioning

confidence: 99%

“…Many PM fiber types which were difficult to align with other methods can be aligned with the IPA method. However, since the current IPA method utilizes linear correlation of IPA profiles [7] for the alignment, it may yield a few degrees of angle alignment error if a fiber is geometrically asymmetric after the manufacturing process. The geometric asymmetry of stress applying parts is a well known issue and does not have a major impact on PM fiber performance.…”

Section: Fig 1 Some Examples Of Typical Pm Fiber Typesmentioning

confidence: 99%

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Fourier Analysis Method for Asymmetric Polarization-Maintaining Fiber Alignment

Zheng¹,

Sugawara²,

Malinsky³

2012

National Fiber Optic Engineers Conference

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“…Recently, the end-view inspection method (End-View, EV) 23,24 has been applied to commercial fusion splicers that require fibre cutting; hence, it cannot obtain internal information along the fibre extension direction without destroying it. Side-view methods, such as digital holographic [25][26][27] , optical tomography 28 , polarisation observation by lens-effect-tracing (POL) 29 , profile alignment system (PAS) 30 , and pattern of scattering 31 , perform measurements from the side of the fibre. Digital holographic and optical tomography systems are accurate but complex and time-consuming; hence, they are rarely used for real-time monitoring.…”

Section: Introductionmentioning

confidence: 99%

Bessel-beam-based side-view measurement of seven-core fibre internal core distribution

Zhan,

Zhu,

Tong

et al. 2024

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Accurate knowledge of the internal core distribution of multicore fibres (MCFs) is essential, given their widespread application, including in fibre splicing, bundle fan-in/fan-out, mode coupling, writing gratings, and fibre drawing. However, the extensive use of MCFs is restricted by the limited methods available to precisely measure the fibre core distribution, as the measurement accuracy determines the performance of the product. In this study, a sideview and nondestructive scheme based on Bessel beam illumination was proposed for measuring the internal core distribution of a seven-core fibre. Bessel beams offer a large focal length in a scattering medium, and exhibit a unique pattern when propagating in an off-axis medium with a spatially varying refractive index. The results revealed that a long focal length and unique pattern influence the image contrast in the case of Bessel beams, which differs from a typical Gaussian beam. Further, high-precision measurement of a seven-core fibre core distribution based on a Bessel beam was demonstrated using a digital correlation method. A deep learning approach was used to improve the measurement precision to 0.2° with an accuracy of 96.8%. The proposed sideview Bessel-beam-based method has the potential to handle more complex MCFs and photonic crystal fibres.

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Interrelation Profile Analysis Method for Alignment of Polarization-Maintaining Fiber

Abstract: A new method for alignment of polarization-maintaining (PM) fibers has been developed that solves alignment problems with low-contrast PM fibers. It provides a fast and accurate universal method for PM fiber alignment.

Cited by 12 publications

References 2 publications

Optical-Fiber Cable Employing 200-μm-Coated Four-Core Multicore Fibers

Optical-Fiber Cable Employing 200-μm-Coated Four-Core Multicore Fibers

Fourier Analysis Method for Asymmetric Polarization-Maintaining Fiber Alignment

Bessel-beam-based side-view measurement of seven-core fibre internal core distribution

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